CN2199431Y - Flue waste-heat energy-saver - Google Patents
Flue waste-heat energy-saver Download PDFInfo
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- CN2199431Y CN2199431Y CN 94236888 CN94236888U CN2199431Y CN 2199431 Y CN2199431 Y CN 2199431Y CN 94236888 CN94236888 CN 94236888 CN 94236888 U CN94236888 U CN 94236888U CN 2199431 Y CN2199431 Y CN 2199431Y
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- flue gas
- main body
- circular passage
- heat exchanger
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Abstract
The utility model relates to an energy saving device which makes use of the residual heat of flue gas. The utility model is used for recycling the residual heat of the flue gas of boilers for living to preheating the supplying water of boilers. The utility model is composed of a cylindric plate type heat exchanger body, the inlet shell cover of flue gas, the outlet shell cover of flue gas, a water supplying pipe and a drainage pipe. The utility model is arranged on the flue gas outlet of a boiler to be one part of a chimney. The utility model has the advantages of simple structure, convenient manufacture, convenient installation and convenient maintenance. When the energy saving device disclosed in the utility model is adopted by boilers for living, the rate of coal consumption can be saved by more than 25%, the movement time of boilers is shortened, and the atmospheric pollution caused by the flue gas of the coal burning of boilers is reduced.
Description
The utility model relates to a kind of used heat use device, particularly relates to a kind of device of recycling boiler for domestic flue gas waste heat.
How to recycle the waste heat of boiler flue, it at home and abroad all is the heat subject of a research, there is large quantities of scholars to be engaged in the research work of this respect, and some of great value achievements have been obtained, but up to this point, people's research focuses mostly in the recycling of Industrial Boiler flue gas waste heat, seldom sets foot in the recycling of boiler for domestic flue gas waste heat.This is because Industrial Boiler platform day discharging flue gas waste heat capacity is big, concentrates continuously, be convenient to recycle, and boiler for domestic platform day discharging flue gas waste heat capacity is little, disperses to be not easy to recycle.As the patent No. is CN 8610522A " utilizing the low-pressure energy-saving hybrid system of smoke discharging residual heat ".The patent No. be CN85204900U's " heat pipe waste heat boiler " etc. all be the device that is used to recycle Industrial Boiler flue gas waste heat, with the waste heat in the flue gas is energy expansion acting generating, or production steam, and these apparatus structure complexity, the investment cost height is difficult to the recycling of boiler for domestic flue gas waste heat.Although boiler for domestic platform day discharging flue gas waste heat capacity is little, the quantity of boiler for domestic is more much bigger than the quantity of Industrial Boiler, and its thermal efficiency is generally low than Industrial Boiler, and the effluent gas temperature of discharging is again than higher.See that on the whole much bigger from the available ratio of heat capacities Industrial Boiler of boiler for domestic flue loss, the waste heat in the boiler for domestic flue gas is the huge energy that can develop.
Designer of the present utility model has carried out long-term thinking research to the development and use of boiler for domestic flue gas waste heat, successfully design more satisfactory boiler for domestic flue gas heat recovery device, in the experiment of actual motion, obtained satisfied effect.
The purpose of this utility model is with its disclosed flue gas afterheat energy-saving device a section as boiler chimney, be installed in the outlet of boiler flue, in this energy-saving appliance, utilize the waste heat preboiler feedwater of flue gas, save the energy and save time to reach, and energy-saving appliance is simple in structure, manufacturing, installation, maintenance convenience, and investment cost is low.
Realize the boiler flue afterheat energy-saving device of the utility model purpose, it is installed in the outlet of boiler flue as the part of chimney, comprise the heat exchanger main body, flue gas import end socket and outlet end socket, feed pipe and drainpipe, wherein the heat exchanger main body is different by the radial dimension that is no less than three, the heat exchange cylindrical shell coaxial line of the axial length unanimity formation that is assembled together, annular space between cylindrical shell and the cylindrical shell is alternate to be flue gas channels and water stream channel, it is straight-through that the flue gas at the circular passage of flue gas and heat exchanger main body two ends is imported and exported end socket, is arranged on the feed pipe at heat exchanger main body two ends and drainpipe and communicates with airtight current circular passage, two ends respectively.
In order to realize the purpose of this utility model better, also can further take following technical measures:
The top of the current circular passage in the heat exchanger main body is provided with the structure that discharges water vapour.
Be arranged on heat exchanger the main body up and down feed pipe and the heat exchange barrel diameter arrangement of drainpipe at two ends, communicate with each current circular passage respectively along the heat exchanger main body.
The flow area of the flue gas circular passage in the heat exchanger main body is not less than the flow area of chimney.
Entrance point is provided with the current distributor in the current circular passage, is processed with equally distributed aperture of linking up with current circular passage main body and the inlet opening that communicates with feed pipe on the distributor.
The port of export of current circular passage is provided with the current flow straightener, is processed with equally distributed aperture of linking up with current circular passage main body and the apopore that communicates with drainpipe on the flow straightener.
Accompanying drawing 1 is a kind of structural representation of the present utility model.
Accompanying drawing 3 is flat orientation figure of a water vapour releasing tube in the current annular straight channel.
Accompanying drawing 4 is that the A-A of accompanying drawing 1 is to view.
Accompanying drawing 5 is aperture orientation layout drawings that are used to link up current circular passage main body of current distributor in the accompanying drawing 4.
Accompanying drawing 6 is another kind of structural representations of the present utility model.
Accompanying drawing 7 is that the B-B of accompanying drawing 6 is to view.
Accompanying drawing 8 is that the C-C of accompanying drawing 6 is to view.
Accompanying drawing 9 is aperture orientation layout drawings that are used to link up current annular straight channel of current distributor in the accompanying drawing 8.
Provide embodiment of the present utility model below in conjunction with the explanation of accompanying drawing drawing, and the utility model is described in further detail.
Embodiment 1:
As accompanying drawing 1 to shown in the accompanying drawing 5.The flue gas afterheat energy-saving device that is used for boiler for domestic, it is installed in the outlet of boiler flue as the some of boiler chimney, and its formation comprises heat exchanger main body 8, flue gas import end socket 11 and outlet end socket 2, feed pipe 3 and drainpipe 12.Heat exchanger is the cylinder plate type heat exchanger, different by 10 diameters, the heat exchange cylinder coaxial line of the axial length unanimity formation that is assembled together, annular space between cylindrical shell and the cylindrical shell is alternate to be flue gas channels 6 and water stream channel 7, it is straight-through that the flue gas at the circular passage of flue gas and heat exchanger main body two ends is imported and exported end socket, be positioned at the water inlet pipe 3 that heat exchanger main body upper end edge heat exchange cylindrical shell diametric(al) is provided with, current distributor 4 by current circular passage arrival end communicates with current circular passage main body, be processed with even distribution aperture 13 of linking up with current circular passage main body and the inlet opening of linking up with water inlet pipe 35 on the current distributor, the current distributor of each current circular passage has two inlet openings of linking up with water inlet pipe 5.The outlet of current circular passage is provided with current flow straightener 10, is processed with even distribution aperture and two apopores 9 of linking up with outlet pipe 12 of linking up with current circular passage main body on the flow straightener.The upper end of current circular passage is provided with the structure of released vapour, and this structure is an abnormal row steam pipe 1, and gland steam exhauster one end communicates with current circular passage main body, and the other end communicates with atmosphere.The flow area of the flue gas channels of heat exchanger main body equates with the flow area of chimney.
Embodiment 2:
As accompanying drawing 6 to shown in the accompanying drawing 9.This embodiment water inlet pipe 3 as different from Example 1 is not arranged on the top of heat exchange cylindrical shell, and be arranged on not far place below the cylinder top, water inlet pipe vertically connects the heat exchange cylindrical shell along the barrel diameter direction, water inlet pipe 3 is linked up with current circular passage main body by the inlet opening 5 and the equally distributed aperture 13 of the current distributor 4 of each current circular passage, as shown in Figure 6.The exhaust hole 14 of the steam releasing structure of current circular passage on the barrel of cylinder top, processing, as shown in Figure 7.The other parts of this embodiment are identical with embodiment 1, do not repeat.
In embodiment 1 and embodiment 2, flue gas all is countercurrent heat-transfer with the boiler feedwater that is preheated, and promptly flue gas enters from the bottom of energy-saving appliance, comes out from top, and the cold water that is preheated enters from the top of energy-saving appliance, comes out from the bottom, and the flow direction of cold fluid and hot fluid is opposite.The flow direction of this fluid is furnished with the raising that is beneficial to heat transfer efficiency, under the situation of transmitting identical heat, needs less heat transfer area, makes the volume-diminished of energy-saving appliance.The energy-saving appliance that the utility model disclosed also can be designed to and spread heat mode, be that heated cold water and flue gas all enter from the bottom of energy-saving appliance, come out from top, because the temperature of flue gas is higher, heated cold water outlet temperature is less demanding, so also can obtain desirable heat exchange effect.And spread under the situation of heat, can save the current distributor of porch, current circular passage and the flow straightener in exit, make the structure of energy-saving appliance simpler, it is convenient to make maintenance, cost is lower.
The inventor has carried out the actual motion experiment with the energy-saving appliance of embodiment 1 form on the coal-fired boiler for domestic of a unit.Because the restriction of the construction conditions of boiler room, the height of the heat exchange cylindrical shell of energy-saving appliance only is 500mm.The live load of this boiler need provide 10 tons of hot water about 80 ℃ every day, 2 tons in 98 ℃ boiling water.Not installing before this energy-saving appliance, the hot water of institute's expense and boiling water are heated to corresponding temperature from 20.5 ℃ of running water, need move 13 hours every day, and the temperature when flue gas enters chimney is 483 ℃.After this energy-saving appliance has been installed in the porch of boiler chimney, 20.5 ℃ running water be preheating to 38 ℃ through this energy-saving appliance, heat up 17.5 ℃, per minute preboiler feedwater 20.43kg, per hour be 1225kg, boiler only need move 10 hours every day, just can satisfy needed hot water amount and minable water yield.The temperature that is heated up by the feedwater of energy-saving appliance preboiler is 17.5 ℃, accounts for by boiler the running water of normal temperature (20.5 ℃) is heated to 22.5% of 77.5 ℃ of boiling temperature (98 ℃) institute rising temperature, promptly saves the energy 22.5%.Below all calculate with boiling water, as calculating with 10 tons of 80 ℃ of hot water and 2 tons of 98 ℃ of boiling water, its energy consumption saving rate is far longer than 22.5%.The temperature that flue gas is come out from this energy-saving appliance still has about 250 ℃.If not the restriction of boiler room construction conditions, suitably strengthen the length of energy-saving appliance heat exchange cylindrical shell, increase heat exchange area, the pre-heat effect of this energy-saving appliance then can be better, and promptly energy-saving effect then can be better.By above actual motion test result as can be known, on coal-fired boiler for domestic, adopt the utility model, not only can save fire coal in a large number, save running time, and owing to reduced the coal-fired pollution of boiler flue that also reduced to atmosphere, improve people's living environment, also reduced transportation simultaneously, reduced cost.As on the coal-burning boiler in the whole nation of enormous amount, adopting the utility model, will produce huge economic benefit and social benefit, particularly in the city, its social benefit is more huge.
The utility model also has simple in structurely except the top advantage of explaining, and parts are few, and it is convenient to make installation and maintenance. Because the heat exchanger main body of this energy-saving appliance is that cylinder is board-like, the passage of flue gas is annular straight channel, therefore the dust in the flue gas is difficult for being deposited in the passage, and also remove easily the dust that is deposited in the passage, reliable, the utility model is the preboiler feedwater in addition, boiler feedwater heated temperature in energy-saving appliance is not high, be difficult for producing incrustation scale, ensured heat-transfer effect, improved the operational reliability of energy-saving appliance.
The utility model also has the advantage of some other aspect.
The utility model is equally applicable to Industrial Boiler.
Claims (7)
1, a kind of flue gas afterheat energy-saving device that is used for boiler for domestic, this energy-saving appliance is installed in the outlet of boiler flue as the some of chimney, it comprises heat exchanger main body (8), flue gas import end socket (11) and outlet end socket (2), feed pipe (3) and drainpipe (12), it is characterized in that the heat exchanger main body is different by the radial dimension that is no less than three, the heat exchange cylindrical shell coaxial line of the axial length unanimity formation that is assembled together, annular space between cylindrical shell and the cylindrical shell is alternate to be flue gas channels (6) and water stream channel (7), it is straight-through that the flue gas at the circular passage of flue gas and heat exchanger main body two ends is imported and exported end socket, is arranged on the feed pipe at heat exchanger main body two ends and drainpipe and communicates with airtight current circular passage, two ends respectively.
2, flue gas afterheat energy-saving device according to claim 1 is characterized in that the top of the current circular passage (7) in the heat exchanger main body (8) is provided with the structure (1,14) that discharges water vapour.
3, flue gas afterheat energy-saving device according to claim 1 and 2 is characterized in that being arranged on heat exchanger the main body feed pipe and the heat exchange barrel diameter arrangement of drainpipe along the heat exchanger main body at two ends up and down, communicates with each current circular passage respectively.
4, flue gas afterheat energy-saving device according to claim 1 and 2 is characterized in that the flow area of the flue gas circular passage (6) in the heat exchanger main body is not less than the flow area of chimney.
5, flue gas afterheat energy-saving device according to claim 3 is characterized in that the flow area of the flue gas circular passage in the heat exchanger main body is not less than the flow area of chimney.
6, flue gas afterheat energy-saving device according to claim 5, it is characterized in that being provided with current distributor (4), be processed with equally distributed aperture (13) of linking up and the inlet opening (5) that communicates with feed pipe on the distributor with current circular passage main body at current circular passage entrance point.
7, flue gas afterheat energy-saving device according to claim 6, the port of export that it is characterized in that the current circular passage is provided with current flow straightener (10), is processed with equally distributed aperture of linking up with current circular passage main body and the apopore (9) that communicates with drainpipe on the flow straightener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94236888 CN2199431Y (en) | 1994-07-25 | 1994-07-25 | Flue waste-heat energy-saver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94236888 CN2199431Y (en) | 1994-07-25 | 1994-07-25 | Flue waste-heat energy-saver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2199431Y true CN2199431Y (en) | 1995-05-31 |
Family
ID=33844753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94236888 Expired - Fee Related CN2199431Y (en) | 1994-07-25 | 1994-07-25 | Flue waste-heat energy-saver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2199431Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322650A (en) * | 2011-07-14 | 2012-01-18 | 李念国 | Membrane wall flue gas waste heat absorption device of vertical boiler chimney |
| CN102434967A (en) * | 2011-12-04 | 2012-05-02 | 苏州方暨圆节能科技有限公司 | Residual heat utilizing device for gas water heater |
| CN108759542A (en) * | 2018-06-12 | 2018-11-06 | 丁厚全 | A kind of curved slab cylindrical heat exchanger |
| CN109813143A (en) * | 2019-02-21 | 2019-05-28 | 华中科技大学 | A kind of heat exchanger utilized for fume afterheat |
-
1994
- 1994-07-25 CN CN 94236888 patent/CN2199431Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322650A (en) * | 2011-07-14 | 2012-01-18 | 李念国 | Membrane wall flue gas waste heat absorption device of vertical boiler chimney |
| CN102434967A (en) * | 2011-12-04 | 2012-05-02 | 苏州方暨圆节能科技有限公司 | Residual heat utilizing device for gas water heater |
| CN108759542A (en) * | 2018-06-12 | 2018-11-06 | 丁厚全 | A kind of curved slab cylindrical heat exchanger |
| CN108759542B (en) * | 2018-06-12 | 2024-05-10 | 丁厚全 | Curved plate barrel type heat exchanger |
| CN109813143A (en) * | 2019-02-21 | 2019-05-28 | 华中科技大学 | A kind of heat exchanger utilized for fume afterheat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |